Open AccessToward an adequate method to isolate spectroscopic families of diffuse interstellar bands
Author(s) -
Wszołek B.,
Godłowski W.
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06143.x
Subject(s) - physics , astrophysics , basis (linear algebra) , statistical analysis , interstellar medium , spectrogram , statistics , galaxy , geometry , artificial intelligence , computer science , mathematics
We divide some of the observed diffuse interstellar bands (DIBs) into families that appear to have the spectral structure of single species. Three different methods are applied to separate such families, exploring the best approach for future investigations of this type. Starting with a statistical treatment of the data, we found that statistical methods by themselves give insufficient results. Two other methods of data analysis (‘averaging equivalent widths’ and ‘investigating the figures with arranged spectrograms’) were found to be more useful as tools for finding the spectroscopic families of DIBs. On the basis of these methods, we suggest some candidates as ‘relatives’ of 5780‐ and 5797‐ Å bands.